I will be amazed if you get it.

Yes, amazed!

You're right, it is metal. And that's a start.

Maybe this third clue will get you a little closer.

Nobody has a clue? Or nobody's around? Well, this 4th clue will be the last until tomorrow when I am at lunch.

Well, now you're really getting close! Super close, in fact, but not quite right.

Maybe this angle will be more revealing.